This HPE 4-in-1 SFF 2.5" Hard Drive Carrier allows for the installation of up to four 2.5" devices (hard drive or solid state drive, SATA and SAS, max height 15mm). This carrier fits into a standard 5.25" external device bay and supports 6Gb/s operation (SATA and SAS). This carrier features four removable trays, designed to load and unload into the carrier tool-free. The carrier also features two 40mm rear cooling fans to aid in thermal management.